well i can only find black versions in the maplin catalogue and i want brushed aluminium ones,oh they are for fitting to a fanbus
from bit-tech article: http://www.bit-tech.net/article/41/2 "Here are some knobs from Maplin part number...YR65V from there brushed Aluminium range - mmmm purdy! notice that they are less deep! but this is still not suffeciant clearance" you could give those a shot. the one on the far left is the one macroman ordered from Maplins.. the others are the one that came with the pcmods kit.
Are these the ones YR64U. http://www.maplin.co.uk/products/module.asp?CartID=0211261955201444565&moduleno=1823&modulecode= <<Edit>> oopps sorry, must have been replying almost at the same time
http://www.abra-electronics.com/catalog/knobs/450_6015.html I've seen them at www.jameco.com too but thier site is running poo right now..